Horizontal screw conveyor for potato starch

Horizontal screw conveyor for potato starch manufactured as a part of a complete screw conveyor project. The horizontal screw conveyors are designed and manufactured in accordance with the food directive EC-1935/2004. The horzontal screw conveyors jump over buck.

What are the reason to manufacture horizontal screw conveyors that jump over buck?

1. You avoid using intermediate bearings in the horizontal screw conveyor
2. Intermediate bearings are not suitable inside a horizontal screw conveyor transporting potato starch
3. The screw rotor is selfcarried in each machine
4. The total solution has an increased lifetime

See another project where the screw conveyors jump over buck In BEMA we are often asked to implement intermediate bearings, when the horizontal screw conveyor exceeds a certain length.

What key points to look for when you work with intermediate bearings in a horizontal screw conveyor?

1. Check that the material cannot enter the intermediate bearing and create wear
2. In case of dusty materials, it is necessary to make a closed housing round the intermediate bearing
3. Be aware that an intermediate bearing needs more maintenance in terms of greasing compared to normal bearings on the outside of the horizontal screw conveyor
4. Design the horizontal screw conveyor with a low filling degree – below 20%

In the actual project BEMA has designed a combination of horizontal screw conveyors in combination with inclined tubular screw conveyors for potato starch. Potato starch is a food ingredient, and the requirements from the food directive needs to be followed.

What actual steps have been taken?

1. All materials used are stainless steel 1.4301
2. All weldings 100%
3. All surfaces have been acid pickled after welding
4. Dead areas inside the horizontal screw conveyor has been avoided

In BEMA we have experience in working with potato starch as well of designing horizontal screw conveyors for the food industry.

FAQ: Horizontal Screw Conveyor for Potato Starch

1. What is a horizontal screw conveyor for potato starch used for?

It is designed to transport potato starch in food‑industry environments where hygiene, gentle handling and long service life are essential. The conveyors are built according to EC‑1935/2004 food‑contact requirements.

2. Why manufacture horizontal screw conveyors that “jump over buck”?

This design eliminates the need for intermediate bearings, which are unsuitable for potato starch. Without intermediate bearings, the system gains longer lifetime, reduced wear and fewer maintenance challenges. The screw rotor is fully self‑carried in each machine.

3. What should be considered when using intermediate bearings in other applications?

If intermediate bearings are required, it is crucial to prevent material from entering the bearing, ensure closed housing for dusty materials, maintain regular greasing, and design the conveyor with a low filling degree—below 20%.

4. How does BEMA ensure food‑grade construction?

All materials are stainless steel 1.4301, weldings are 100%, surfaces are acid‑pickled, and dead zones inside the conveyor are avoided. These steps ensure compliance with food‑industry standards and optimal hygiene.

5. What does the complete solution include?

BEMA designed a combined system of horizontal and inclined tubular screw conveyors tailored for potato starch handling, ensuring efficient flow and long‑term reliability.